The Dauphiné is best known for its transfer from the last non-royal Dauphin (who had great debts and no direct heir) to the King of France in 1349. The terms of the transfer stipulated that the heir apparent of France would henceforth be called "le Dauphin" and included significant autonomy and tax exemption for the Dauphiné region, most of which it retained only until 1457, though it remained an imperial state until the French Revolution.

Under the Ancien Régime, the province was bordered in the North by the River Rhône which separated the Dauphiné from the Bresse ("Brêsse") and Bugey ("Bugê"). To the east it bordered the Savoy and Piedmont, and to the south the Comtat Venaissin and Provence. The western border was marked by the Rhône to the south of Lyon. The Dauphiné extended up to what is now the centre of Lyon. It was divided into the "High Dauphiné" and "Low Dauphiné". The first covered:

The province offers a range of terrain, from the alpine summits of the High-Dauphiné (the Barre des Ecrins is 4,102 meters at its highest point), the Prealps (Vercors and Chartreuse), and the plains of the Drôme, which resemble the landscapes of Provence.

The area of the future Dauphiné was inhabited by the Allobroges and other Gaulish tribes in ancient times. The region was conquered by the Romans before Gallia conquest by Julius Caesar. Vienne became a Roman colony and one of the most important cities of Gallia.

At that time, the development of feudal society and the weakness of the Emperor's rule allowed for the creation of several small ecclesiastic or secularist States (the region of Viennois, for example, was under the rule of the archbishop of Vienne). In the middle of that chaos, the Counts of Albon succeeded in uniting these different territories under their rule.[3]

Amidst the chaos of feudal rule, the Counts of Albon began to rise above other feudal lords and acquire dominance over the region. Their story begins with Guigues I the Old (died 1070), Lord of Annonay and Champsaur. During his reign, he gained significant territories for his province: a part of the Viennois, the Grésivaudan and the Oisans. Moreover, the Emperor gave him the region of Briançon. The territories combined under his personal rule became a sovereign mountain principality within the Holy Roman Empire. The count made a significant decision when[4] he chose the small city of Grenoble as capital of his state instead of the prestigious city of Vienne, which was the long-established seat of a powerful bishop. This choice allowed him to assert authority over all his territories.

However, the Dauphiné did not, at this point, have its modern borders. The region of Vienne and Valence were independent and even in Grenoble, the capital, the authority was shared with the bishop. Furthermore, the cities of Voiron and la Côte-Saint-André were parts of the County of Savoy, while the Dauphins had the Faucigny and territories in Italy. This tangle between Dauphiné and Savoy resulted in several conflicts. The last Dauphin, Humbert II of Viennois, made peace with his neighbour. He also acquired the city of Romans. He finally created the Conseil Delphinal and the University of Grenoble and enacted the Delphinal Status, a kind of constitution that protected the rights of his people.

The significant debts of Humbert II and the death of his son and heir led to the sale of his lordship to King Philip VI in 1349, by the terms of the treaty of Romans, negotiated by his protonotary, Amblard de Beaumont. A major condition was that the heir to the throne of France would be known as le Dauphin, which was the case from that time until the French Revolution; the first Dauphin de France was Philippe's grandson, the future Charles V of France. The title[5] also conferred an appanage on the region. Charles V spent nine months in his new territory.

Humbert's agreement further stipulated that Dauphiné would be exempted from many taxes (like the gabelle); this statute was the subject of much subsequent parliamentary debate at the regional level, as local leaders sought to defend this regional autonomy and privilege from the state's assaults.

The nobility of the Dauphiné took part in the battles of Poitiers (1356) and Agincourt (1415). The province was also the setting for military events during the war. The Duke of Savoy and the Prince of Orange, with the help of the English and Burgundians authorities, planned to invade the Dauphiné, but at the battle of Anthon in 1430, the army of the Principality of Orange was defeated by the troops of the Dauphiné, preventing the invasion.

Louis XI was the only Dauphin of France to administer his territory, from 1447 to 1456. It was during his reign as Dauphin that the Dauphiné became totally integrated into France. At that time, it was an anarchic state, with conflicts between nobles still common.[6] Louis XI prohibited these conflicts and forced the nobles to recognize his authority. The Conseil Delphinal became the third Parlement of France. Moreover, Louis XI politically united the Dauphiné. He forced the archbishop of Vienne, the bishop of Grenoble and the abbot of Romans all to pledge allegiance to him. He also acquired Montélimar and the Principality of Orange.

In addition, he developed the economy of the province, by constructing roads and authorizing markets. He finally created the University of Valence founded 26 July 1452, by letters patent. Nevertheless, he also tried to institute the gabelle without referring the issue to the estates of the province, resulting in discontent on the part of the nobility and the people of the province. Because of his opposition to his father, Charles VII, he was forced to leave the Dauphiné. The King took back the control of the province and forced the Estates to pledge allegiance in 1457.[7]

Imperial suzerainty was not entirely forgotten in the 15th century. The Emperor Sigismund negotiated with King Henry V of England to give the Dauphiné to an English prince. The Dauphinois also did not forget their autonomy. The Pragmatic Sanction of Bourges (1438), which esposed Gallicanism, and the Concordat of Bologna (1516), which rectified France with the Papacy, were both promulgated for France and the Dauphiné distinctly. The Ordinance of Villers-Cotterêts (1539), on the other hand, which made French the official language of France, since it was not issued by the king as dauphin was not recognised in the Dauphiné. A second ordinance was promulgated at Abbeville on 9 April 1540 by the king as dauphin and this the Dauphinois parliament accepted.[8]

During the Italian Wars (1494–1559), French troops were quartered in Dauphiné. Charles VIII, Louis XII and Francis I stayed often in Grenoble, but the people of the province suffered the exactions of the soldiers. Moreover, the nobility of the region took part in the different battles (Marignano, Pavia) and gained an immense prestige.[9] The best-known of its members was Pierre Terrail de Bayard, "the knight without fear and beyond reproach".

The province suffered from the French Wars of Religion (1562–98) between Catholics and Protestants at the end of the 16th century. The Dauphiné was a center of Protestantism in France, in cities such as Gap, Die, and La Mure. François de Beaumont, the Huguenot leader, became famous for his cruelty and his destructions.

The cruel execution of Charles du Puy-Montbrun, leader of the Protestants, by the king of France, led to more violence and struggles between the two parties.

In 1575, Lesdiguières became the new leader of the Protestants and obtained several territories in the province. After the accession of Henry IV to the throne of France, Lesdiguières allied with the governor and the lieutenant general of Dauphiné. However, this alliance did not put an end to the conflicts. Indeed, a Catholic movement, la Ligue, which took Grenoble in 1590, refused to make peace. After months of assaults, Lesdiguières defeated the Ligue and took back Grenoble. He became the leader of the entire province.[10]

The conflicts were over, but Dauphiné was destroyed and its people exhausted. The enactment of the Edict of Nantes (1598) restored some civil rights to the Huguenots and brought peace for a short time, but the wars resumed soon afterward.

Lesdiguières defeated the army of Savoy several times and helped the reconstruction of the region. His most famous construction is the Palace of Vizille, built for his personal use.

The last meeting of the Estates of Dauphiné took place in 1628. It symbolizes the end of the liberty of the province. From that time, the important decisions were taken by the representatives of the king. It shows the progress of Absolutism.

The revocation of the Edict of Nantes by Louis XIV in 1685 caused the departure of 20,000 Protestants from Dauphiné, weakening the economy of the province. Some valleys lost half of their inhabitants.[11]

In 1692, during the Nine Years' War, the Duke of Savoy invaded the Dauphiné. Gap and Embrun were badly damaged. But the Savoy armies were defeated by Philis de la Charce.

In 1713, the Treaty of Utrecht changed the borders of Dauphiné. The province gained the town of Barcelonette but lost the major part of the Briançonnais.

The 18th century was a period of economic prosperity for the region, with the development of the industry (glove-making in Grenoble, silk mills in the Rhône valley). Important trade shows also occurred at Grenoble or Beaucroissant.

In 1787, the province was one of the first to demand the meeting of the Estates General of France. The turning point occurred in 1788 with the Day of the Tiles. The King ordered the expulsion of the parliamentarians from Grenoble. But the economy of the city was dependent on its Parliament. As a result, the people attacked the royal troops to prevent the expulsion of the magistrates. This event allowed the sitting of the Assembly of Vizille, which instigated the meeting of the old Estates General, thus beginning the Revolution.

The approval of the establishment of the Empire was clear and overwhelming (in Isère, the results showed 82,084 yes and only 12 no).[13]

In 1813, Dauphiné was under the threat of the Austrian army which had invaded Switzerland and Savoy. After having resisted at Fort Barraux, the French troops withdrew to Grenoble. The city, well-defended, contained the Austrian attacks, and the French army defeated the Austrians, forcing them to withdraw at Geneva. But the invasion of France in 1814 resulted in the capitulation of the troops in Dauphiné.

During his return from the island of Elba in 1815, the Emperor was welcomed by the people in the region. At Laffrey, he met the royalist 5th Infantry Regiment of Louis XVIII. Napoleon stepped towards the soldiers and said those famous words: "If there is among you a soldier who wants to kill his Emperor, here I am." The men all joined his cause. Napoleon was then acclaimed at Grenoble. After the defeat at Waterloo, the region suffered from a new invasion of Austrian and Sardinian troops.

This century corresponds to a significant industrial development of Dauphiné, particularly in the region of Grenoble (glove-making reached its Golden Age at that time) and the Rhone Valley (silk mills). The shoemaking industry also developed in Romans.

During the Second Empire, the Dauphiné saw the construction of its railway network (the first trains arrived at Valence in 1854 and Grenoble in 1858). The driving of new roads in the Vercors and Chartreuse ranges allowed the beginning of tourism in the province. Moreover, several notable persons such as Queen Victoria came in the region with the success of thermal stations such as Uriage-les-Bains.

In 1869, Aristide Berges played a major role in industrializing hydroelectricity production. With the development of his paper mills, industrial development spread to the mountainous region of Dauphiné.

During the Belle Epoque, the region benefited from major transformations thanks to its economic growth. The Romanche Valley became one of the most important industrial valleys of the country.[14] World War I accelerated that trend. Indeed, in order to sustain the war efforts, new hydroelectric industries settled next to different rivers of the region. Several other businesses moved into armament industries. Chemical companies also settled in the region of Grenoble and near Roussillon in the Rhone Valley.

The textile industry of Dauphiné also benefited from the war. The occupation of northern France resulted in the settlement of many textile enterprises in the region. Vienne for instance produced one fifth of the national production of sheets for the army in 1915.[15]

Several Alpine troops, the Chasseurs Alpins, were killed at war. They were nicknamed the "Blue Devils" for their courage on the field.

The economic development of the region was highlighted by the organisation at Grenoble of the International Exposition of the "Houille Blanche" in 1925, visited by thousands of people.

The interwar period was also characterized by the beginning of the winter sports in Dauphiné. The ski resort of l'Alpe d'Huez was constructed in 1936, and Jean Pomagalski created there the first platter lift in the world.

In World War II, during the Italian invasion of France, the Chasseurs Alpins contained the Italian troops, preventing an invasion of the region. But the German victories in northern France quickly threatened the troops in Dauphiné. The Nazis were stopped near Grenoble, at Voreppe. The French forces resisted until the armistice. The Dauphiné was then part of the French State, before being occupied by the Italians from 1942 to 1943, when the Germans occupied southern France.

The various territories of Dauphiné experienced diverging demographic evolutions. Although the plains of Low Dauphiné and the big cities saw a strong increase in population during the 20th century (thanks to the industrial development and immigrant workers' arrival), the mountainous regions of High-Dauphiné suffered from a pronounced exodus.

These days, the entire territory is experiencing population growth because of economic development and tourism.

The population of the Dauphiné was relatively stable until the mid-20th century, when growth became more rapid. However it should be remembered that several cities of northern Dauphiné (Villeurbanne, Vénissieux, Bron and others) are included in the department of Rhône. In 1999, the population of these cities was over 460,000.

Histogram of the evolution since 1801:

Dauphiné has a population density of 90.78/km², with a very clear differentiation between Isère (159/km²) and Hautes-Alpes (23/km²).

Grenoble concentrates around the third of the population of Dauphiné. Valence is now the second big Dauphiné metropolis. Dauphiné also benefits from an important network of mid-sized cities covering all the territory (Vienne, Montélimar, Gap, etc.).